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M. G. BUNNELL. MACHINE FOR MAKING AND REPAIRING ROADS.

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V v M. G. BUNNELL. MACHINE FOR MAKING AND REPAIRING ROADS. No. 469,771. Patented Mar. 1, 1892.

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No. 469,771., Patented'M ar. 1, 1892.

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MORTON G. BUNNELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK Q. AUSTIN, OF SAME PLACE.

MACHINE FOR MAKING AND REPAIRING ROADS.

SPECIFICATION forming part of Letters Patent No. 469,771, dated March 1, 1892.

Application filed March 9, 1891. Serial No. 384,270. (No model.)

To aZl whom it may concern:

Be it known that I, MORTON G. BUNNELL, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Machines for Making and Repairing Roads, of which the following is a specification.

My invention relates to a construction of road-working machines adapted for making and repairing roads and involving a bodyframe and a scraper-blade which is arranged between the front and rear wheels and is adapted for diagonal adj ustmentthat is to say, it is arranged so that it can be adjusted to various horizontal angles relatively to the line of progression of the machine.

The object of my invention is to provide improved means for adjusting the rear axle, so that while it is swung horizontally in order to vary its angle relatively to the length of the body-frame it shall also have a certain extent of end movement and thereby set the rear wheels farther toward one side or the other, according to the direction in which the axle is swung.

To the attainment of the foregoing and other useful ends, my invention consists in matters hereinafter set forth.

In the accompanying drawings, Figure is a top plan view of a road-working machine embodying my invention, a portion of the rear platform being broken away so as toexpose the double wedges or inclined guides on the rear axle. Fig. 2 is a side elevation of the rear portion of the machine with the near wheel removed. Fig. 3 is a top plan view of a part of the rear end portion of the machine, and further illustrates the double wedges or inclined guides. Fig. 4 is a view similar to Fig. 3 with the wedges F omitted. Fig. 5 is a View similar to Fig. 3 with the wedges F omitted. Fig. 6 is a similar view, but illustrates the inclined guides as rigid on the body-frame and the rolls on the axle.

In said drawings, A indicates the bodyframe, which is pivotally supported at its forward end upon the front axle 1, which said axle is provided with wheels 2 in the usual way. The forward end of the body-frame by a horizontally and vertically swinging draft-bar D, which is pivotally held at the forward end of the machine.

\Vhile various known devices can be employed for raising and lowering and otherwise adjusting or positioning the blade with reference to the work to be performed, it may be mentioned that efficient means for such purpose are fully set forth in my Letters Patent of the United States Nos. 427,7 38 and 427,739, dated May 13, 1890.

6 The rear axle E is arranged to have a combined horizontal swing and end movement in' dependently of the body-frame, and to such end it is provided with wedges or laterallyprojecting guides or portions having bearingfaces which are oblique to the line of the axle and arranged to bear against suitable bearings on the body-frame, by which arrangement the application of power in a direction to move the axle endwise independently of the body-frame or shift the body-frame laterally and independently of the axle thereupon will cause the said axle to swing horizontally and at the same time cause a relative side adjustment between the body-frame and axle.

In the first three figures of the drawings the rear axle is shown as provided with What I term double wedgesthat is to say, it is at each end portion provided with two wedges F and F, the formerbeingon its forward side and the latter on its rear side. The bearingfaces 4 of the wedges are arranged oblique to the line of the axle, and the bearing-face of each wedge F is arranged parallel with the bearing-face of the wedge F ,directly back of it, thus forming oblique or inclined guides. Thewedges can be formed with or secured to the rear axle in any convenient way, and, if desired, each wedge F can be made integral with the wedge directly in rear of it. The

body-frame carries a set of anti-friction rolls 5, against which the outer faces of the wedges or guides bear, the arrangement of said bearings being best indicated in dotted lines.

The rear axle can be adjusted by any suitable device tending to move it endwise, but permitting it when so moved to swing horizontally,a simple expedient for such purpose being a chain G, operated by awinding-drum 6 on a hand-wheel shaft 7. The hand-wheel shaft is supported by suitable bearingson the body-frame of the machine, and the adjusting-chain is connected with the rear axle at or about its longitudinal middle. The axles of the rolls 5 are also provided. with guidepulleys 8 for the chain, although said pulleys may, if preferred, be otherwise supported upon the sides of the main frame. To guide the rear axle on its horizontal adjustment and prevent the body-frame from tilting sidewise independently of said axle, the body-frame has its sides provided with horizontally-arranged guidewaysH, through which the axle and its wedges extend, it being observed that the substantially C-shaped bars 9, which partially provide saidguideways, also afford convenient bearings for the journals of the antifriction rolls 5.

In Fig. 4 the rear axle is shown provided only with wedges F. The bearing-faces 4 of said wedges bear against the front rolls 5 on the body-frame, and the axle can be adjusted by-an-y suitable means, as by the chain and winding device shown and lettered in correspondence with the chain, and winding device of the preceding figures. Where 1 provide the rear axlewith single wedgesthat is to say, with wedges Falong one side only, I provide at the opposite side ofthe said axle ananti-friction roll 10 or like hearing, which is supported upon the body-frame at a point midway of its sides. Hence when the rear axle is adjusted with such arrangement it slides along and also swings about the center bearingglO, its swing being enforced by the engagement of its wedges F with the front bearing-rolls 5. It will be observed that the wedges F, which are provided along the forranged blade-has its forward end'at the right side of the machine the rear axle should be swung so as toplace the right rear wheel ahead, and thus'cause the rear wheels to run axle with the rear wedges F, as shown. in'

Fig. 5, in which case the two forward'rolls or bearings 5 of the first three figures will be dispensed with and a roll 11 be arranged in front of the axle on a suitable cross portion of the body-frame.

For the broader purpose of my invention I may, in place of arranging the oblique bearing-faces (or wedges, as I prefer to call them) on the rear axle, arrange them on the body-frame and provide the axle with the rolls which engage such bearing-faces. This I have illustrated in Fig. 6,,in which I provide the body-frame with waysLhaving oblique faces correspondingto the wedges and arrange upon the rear axle a couple of pins or rolls 12, forming bearings which engage the bearing-faces of the stationary ways. The ways I can be formed inany suitable wayfor example, between bars or by slots inan angular bar securedto thebody-frame.

In all of the foregoing instances the rear axlehas a swinging adjustment synchronously with its end or longitudinal adj ustment. Hence it may properly be termed a combined horizontally-swinging and longitudinally-adjustable rear axle. It is also observed that the axle has an end movement or adj ustment, and that it isso guided that when moved endwise it will swing horizontally.

That I claim as my invention is- 1. The combination, substantially as hereinbefore set forth, inaroad-workin g machine, of a diagonally-adjustable scraper-blade and a longitudinally-adjustable rear axle guided in its end movement so as to be caused thereby to swing horizontally;

2. The combination, substantially as hereiubefore set forth, in aroad-working machine, of a diagonally-adjustable scrapereblade, a horizontally swinging and longitudinallymovable rear axle, and wedges and bearings therefor which serve as guides to enforce a swing on the part of the axle when it is moved endwise.

3. In a road-working machine provided with a diagonally-adjustable scraper-blade, the horizontally-swinging and'longitudinallymovable rear axle provided with wedges arranged to engage bearings on the body-frame of the: machine, substantially as set forth.

4. In a road-working machine provided with a diagonally-adjustable scraper-blade, the horizontally-swinging and longitudinallymovable rear axle provided along oneside with wedges arranged to engage bearingson the body-frame, combined with means suitable for adjusting saidaxle, substantially as set forth.

6. In a roadworking machine provided with a diagonally-adjustable scraper-blade, a

the horizontally-swinging and longitudinallymovable rear axle provided with wedges F and F, arranged to engage bearings on the body-frame, substantially as set forth.

8. The combination, substantially as hereinbefore set forth, in" a machine for making and repairing roads, of a body-frame pivotally connected with the front axle, a diagonally-adj ustablc scraper-blade arranged to extend. across the space between the front and rear Wheels, the adjustable rear axle provided with double wedges arranged to form wedge portions at its front and rear, the bearings for the wedges, a winding device on the bodyframe, cord or chain connection between said winding device and the rear axle, and pulleys about which said cord or chain connection is arranged to pass.

MORTON G. BUNNELL. Witnesses:

HARRY COBB KENNEDY, FREDK. H. MILLS. 

